be quiet! TFX POWER 3 300W Bronze power supply unit 20+4 pin ATX Black
be quiet! TFX POWER 3 300W Bronze, 300 W, 100 - 240 V, 350 W, 50 - 60 Hz, 4/1.5 A, 4 A
| Date | Price |
|---|---|
| 16 March 2026 | £45.69 |
| 2 April 2026 | £52.88 |
| 17 April 2026 | £52.23 |
| 21 April 2026 | £50.99 |
| 23 April 2026 | £52.23 |
| 1 May 2026 | £50.99 |
| 4 May 2026 | £50.99 |
| 8 May 2026 | £54.98 |
| 9 May 2026 | £50.99 |
| 13 May 2026 | £54.98 |
| 15 May 2026 | £50.99 |
| 6 June 2026 | £50.27 |
| 14 June 2026 | £54.98 |
Compare be quiet! TFX POWER 3 300W Bronze power supply unit 20+4 pin ATX Black prices UK
*Date of last price update
User Notice: We regularly reference new offers to provide you with the widest selection. However, the displayed results do not reflect all available offers on the market. By default, offers are sorted by price, with the lowest price appearing first.
Product Information
TFX Power 3 300W Bronze, the advanced be quiet! compact PSU gives you more for your mini or media PC. It supports the latest standards while providing solid voltages and enough power to support a PCIe graphics card. The combination of quiet operation and reliability make the TFX Power 3 300W Bronze the perfect choice for PCs with TFX form factor.
80 PLUS® BRONZE CERTIFICATION
Efficient operation
The 80 PLUS Bronze certification of TFX Power 3 300W Bronze with an efficiency rating of up to 88.3% is convincing evidence of this PSU’s power saving operation.
STRONG SINGLE 12V RAIL
For maximum power
The 12V rail design supports high stability as the CPU receives its power through an independent rail. For demanding peripherals like a graphics card, a PCIe connector is included. This makes the TFX Power 3 300W Bronze the ideal PSU for all who strive for enough power to support small systems at low noise.
QUIET AND SAFE
Optimized for low-noise operation
The temperature-controlled fan ensures a quiet operation and produces little wasted heat. Since TFX Power 3 300W Bronze meets the latest safety requirements, it defends the PC system against overcurrents, over- and undervoltage, short circuit, overloads and comparable failures.
Product
- Name
- be quiet! TFX POWER 3 300W Bronze power supply unit 20+4 pin ATX Black
- Category
- Power Supply Units
- Brand
- be quiet!
Power
- Total power
- 300 W
- AC input voltage
- 100 - 240 V
- Peak power
- 350 W
- AC input frequency
- 50 - 60 Hz
- Input current
- 4/1.5 A
- Maximum input current (@110V)
- 4 A
- Maximum input current (@220V)
- 1.5 A
- Power factor
- 0.96
- Power Factor Correction (PFC) type
- Active
- Combined power (+3.3V)
- 85 W
- Combined power (+12V)
- 300 W
- Combined power (+5V)
- 85 W
- Max output current (+3.3V)
- 16 A
- Max output current (+12V1)
- 25 A
- Max output current (+5V)
- 16 A
- Max output current (-12V)
- 0.3 A
- Max output current (+5Vsb)
- 2.5 A
- Hold time
- 22 ms
- Efficiency
- 86.4%
- Power protection features
- Over current, Over power, Over voltage, Short circuit, Under voltage
Weight & dimensions
- Width
- 85 mm
- Depth
- 175 mm
- Height
- 65 mm
- Weight
- 900 g
Ports & interfaces
- Motherboard power connector
- 20+4 pin ATX
- Peripheral (Molex) power connectors (4-pin)
- 2
- Motherboard power cable length
- 35 cm
- Number of SATA power connectors
- 3
- SATA power cable length
- 300,450,600 mm
- Peripheral (Molex) power cable length
- 300,450 mm
- PCI Express power connectors (6+2 pin)
- 1
- PCI Express power cable length
- 40 cm
- CPU P4 connector (4-pin)
- 1
- CPU power cable length
- 35 cm
- Floppy drive power connector
- 1
- Floppy disk drive cable length
- 60 cm
- Cabling type
- Non-Modular
Packaging data
- Package width
- 159 mm
- Package depth
- 80 mm
- Package height
- 215 mm
- Package weight
- 1.24 kg
- Package type
- Box
Performance
- Purpose
- PC
- Power supply unit (PSU) form factor
- TFX
- 80 PLUS certification
- 80 PLUS Bronze
- ATX version
- 2.52
- EPS version
- 2.92
- Noise level
- 29.1 dB
- Bearing technology
- Rifle
- Mean time between failures (MTBF)
- 100000 h
Design
- Product colour
- Black
- Cooling type
- Active
- Fan diameter
- 8 cm
- Number of fans
- 1 fan(s)
Logistics data
- Shipping (inner) case length
- 47.4 cm
- Shipping (inner) case width
- 27.5 cm
- Shipping (inner) case height
- 19.5 cm
- Products per shipping (inner) case
- 6 pc(s)
- Shipping (inner) case gross weight
- 8.25 kg
- Harmonized System (HS) code
- 84733020
Technical details
- Sustainability certificates
- ENERGY STAR, ErP
- Sustainability compliance
- Yes
Certificates
- Compliance certificates
- RoHS, WEEE
Safety regulation & standards
- Safety
- CE, CB, TÜV, CU
Customer Reviews
Share your opinion on the product or read reviews from other members.
